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Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron: an exploration of potential controls on coral aragonite B/Ca

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Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron : an exploration of potential controls on coral aragonite B/Ca. / Allison, Nicola.

In: Heliyon, Vol. 3, No. 8, e00387, 08.2017.

Research output: Contribution to journalArticle

Harvard

Allison, N 2017, 'Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron: an exploration of potential controls on coral aragonite B/Ca' Heliyon, vol. 3, no. 8, e00387. https://doi.org/10.1016/j.heliyon.2017.e00387

APA

Allison, N. (2017). Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron: an exploration of potential controls on coral aragonite B/Ca. Heliyon, 3(8), [e00387]. https://doi.org/10.1016/j.heliyon.2017.e00387

Vancouver

Allison N. Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron: an exploration of potential controls on coral aragonite B/Ca. Heliyon. 2017 Aug;3(8). e00387. https://doi.org/10.1016/j.heliyon.2017.e00387

Author

Allison, Nicola. / Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron : an exploration of potential controls on coral aragonite B/Ca. In: Heliyon. 2017 ; Vol. 3, No. 8.

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@article{787f4bfdc2f843d79631b6159b9dbdc4,
title = "Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron: an exploration of potential controls on coral aragonite B/Ca",
abstract = "The boron geochemistry of coral skeletons reflects the dissolved inorganic carbon (DIC) chemistry of the calcification fluid from which the skeletons precipitates and may be a valuable tool to investigate the effects of climate change on coral calcification. In this paper I calculate the predicted B/Ca of aragonite precipitating from seawater based fluids as a function of pH, [DIC] and [Ca2+]. I consider how different co-precipitating DIC species affect aragonite B/Ca and also estimate the impact of variations in the B(OH)4−/co-precipitating DIC aragonite partition coefficient (KD), which may be associated with changes in the DIC and Ca2+ chemistry of the calcification fluid. The coral skeletal B/Ca versus calcification fluid pH relationships reported previously can be reproduced by estimating B(OH)4− and co-precipitating DIC speciation as a function of pHCF and assuming that KD are constant i.e. unaffected by calcification fluid saturation state. Assuming that B(OH)4− co-precipitates with CO32−, then observed patterns can be reproduced by a fluid with approximately constant [DIC] i.e. increasing pHCF concentrates CO32−, as a function of DIC speciation. Assuming that B(OH)4− co-precipitates with HCO3− only or CO32− + HCO3− then the observed patterns can be reproduced if [DIC]CF and pHCF are positively related i.e. if DIC is increasingly concentrated in the calcification fluid at higher pHCF probably by CO2 diffusion into the calcification site.",
keywords = "Geochemistry, Geology, Oceanography",
author = "Nicola Allison",
note = "This work was supported by the UK Natural Environment Research Council (award NE/I022973/1).",
year = "2017",
month = "8",
doi = "10.1016/j.heliyon.2017.e00387",
language = "English",
volume = "3",
journal = "Heliyon",
issn = "2405-8440",
publisher = "Elsevier",
number = "8",

}

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TY - JOUR

T1 - Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron

T2 - Heliyon

AU - Allison, Nicola

N1 - This work was supported by the UK Natural Environment Research Council (award NE/I022973/1).

PY - 2017/8

Y1 - 2017/8

N2 - The boron geochemistry of coral skeletons reflects the dissolved inorganic carbon (DIC) chemistry of the calcification fluid from which the skeletons precipitates and may be a valuable tool to investigate the effects of climate change on coral calcification. In this paper I calculate the predicted B/Ca of aragonite precipitating from seawater based fluids as a function of pH, [DIC] and [Ca2+]. I consider how different co-precipitating DIC species affect aragonite B/Ca and also estimate the impact of variations in the B(OH)4−/co-precipitating DIC aragonite partition coefficient (KD), which may be associated with changes in the DIC and Ca2+ chemistry of the calcification fluid. The coral skeletal B/Ca versus calcification fluid pH relationships reported previously can be reproduced by estimating B(OH)4− and co-precipitating DIC speciation as a function of pHCF and assuming that KD are constant i.e. unaffected by calcification fluid saturation state. Assuming that B(OH)4− co-precipitates with CO32−, then observed patterns can be reproduced by a fluid with approximately constant [DIC] i.e. increasing pHCF concentrates CO32−, as a function of DIC speciation. Assuming that B(OH)4− co-precipitates with HCO3− only or CO32− + HCO3− then the observed patterns can be reproduced if [DIC]CF and pHCF are positively related i.e. if DIC is increasingly concentrated in the calcification fluid at higher pHCF probably by CO2 diffusion into the calcification site.

AB - The boron geochemistry of coral skeletons reflects the dissolved inorganic carbon (DIC) chemistry of the calcification fluid from which the skeletons precipitates and may be a valuable tool to investigate the effects of climate change on coral calcification. In this paper I calculate the predicted B/Ca of aragonite precipitating from seawater based fluids as a function of pH, [DIC] and [Ca2+]. I consider how different co-precipitating DIC species affect aragonite B/Ca and also estimate the impact of variations in the B(OH)4−/co-precipitating DIC aragonite partition coefficient (KD), which may be associated with changes in the DIC and Ca2+ chemistry of the calcification fluid. The coral skeletal B/Ca versus calcification fluid pH relationships reported previously can be reproduced by estimating B(OH)4− and co-precipitating DIC speciation as a function of pHCF and assuming that KD are constant i.e. unaffected by calcification fluid saturation state. Assuming that B(OH)4− co-precipitates with CO32−, then observed patterns can be reproduced by a fluid with approximately constant [DIC] i.e. increasing pHCF concentrates CO32−, as a function of DIC speciation. Assuming that B(OH)4− co-precipitates with HCO3− only or CO32− + HCO3− then the observed patterns can be reproduced if [DIC]CF and pHCF are positively related i.e. if DIC is increasingly concentrated in the calcification fluid at higher pHCF probably by CO2 diffusion into the calcification site.

KW - Geochemistry

KW - Geology

KW - Oceanography

UR - http://www.sciencedirect.com/science/article/pii/S2405844017318637#appd001

U2 - 10.1016/j.heliyon.2017.e00387

DO - 10.1016/j.heliyon.2017.e00387

M3 - Article

VL - 3

JO - Heliyon

JF - Heliyon

SN - 2405-8440

IS - 8

M1 - e00387

ER -

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ID: 251006820